电子与信息工程学院本科毕业论文论文题目高频开关电源并联均流的技术研究学生姓名XXX学号所属院部电子与信息工程学院专业电气工程及其自动化班级07电气2班指导教师XXXX2011年5月西安交通大学硕士学位论文摘要摘要电力控制系统是电力设备安全运行的保证。电力控制必须具备安全可靠的控制电源。随着变电站直流负载的增加，要求组建一个大容量的直流电源系统。单台电源供电给系统的安全稳定运行带来了隐患。采用多个高频开关电源模块并联运行，来提供大功率输出是电源技术发展的方向。对于高频开关电源模块的冗余备份的关键就是模块之间电流平均分配。本文详细讨论了均流的几种控制方法，得出民主均流法为电力系统中最实用的均流方式，UC3902芯片的问世，加速了民主均流技术的推广，并广泛应用于电力控制电源。关键词：控制电源；高频开关电源；并联均流；民主均流咸宁学院学士学位论文ABSTRACTABSTRACTElectriccontrolsystemistheassuranceofsecureoperationofpowerequipment.Electriccontrolshouldhaveasecureandreliablecontrollingpower.Alarge-capacityDCpowersystemisrequestedalongwithagrowingnumberofDCloadinsubstations.Asinglepowersupplybringshiddendangertothesafeandstableoperationofasystem.Itisthedirectionofthedevelopmentofthepowertechnologytoadoptseveralparallel-runninghigh-frequencyswitchingpowersupplymodule,whichcanprovidehigh-poweroutput.Thekeytoredundantbackupofhighfrequencyswitchingpowersupplymoduleistheaveragedistributionofthecurrentamongthemodules.Severalcontrollingmethodsofdistributingthecurrentequallyareparticularlydiscussedinthisarticle,whichdrawsaconclusionthatdemocraticmethodtodistributingthecurrentequallyisthemostpracticalwaytorealizetheaveragedistributionofthecurrent.TheappearanceofUC3902chipacceleratesthespreadofdemocratictechnologytodistributingthecurrentequallydemocraticcurrentevennesstechnology,anditiswidelyappliedtoelectriccontrolpower.KEYWORDS:Controllingpowersupply;High-frequencyswitchingpower;Evennessofcurrentinparallelling;Democraticevennessofcurrent目录STYLEREF"标题1"\*MERGEFORMAT目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc295566990"1绪论PAGEREF_Toc295566990\h1HYPERLINK\l"_Toc295566991"1.1选题的目的和研究重点PAGEREF_Toc295566991\h1HYPERLINK\l"_Toc295566992"1.2高频开关电源简介与分类PAGEREF_Toc295566992\h1HYPERLINK\l"_Toc295566993"1.3电力控制电源的发展PAGEREF_Toc295566993\h2HYPERLINK\l"_Toc295566994"2高频开关电源系统PAGEREF_Toc295566994\h3HYPERLINK\l"_Toc295566995"2.1高频开关电源系统构成PAGEREF_Toc295566995\h3